I have 2 combboxes in a user form,

txtprice = 5
txtqty = 2

And i want in the third combobox to display the result of the multiplication
of ( txtprice * txtqy )

And in another user form i want to the same but instead of multiplicacion I
want to divide the 2 combboxes.

Actually I did it, but i get an error wich says "Type Mismatch"?
Can anybody help me.

Thanks